CN204200094U - Suspended automatic scraper - Google Patents
Suspended automatic scraper Download PDFInfo
- Publication number
- CN204200094U CN204200094U CN201420436637.0U CN201420436637U CN204200094U CN 204200094 U CN204200094 U CN 204200094U CN 201420436637 U CN201420436637 U CN 201420436637U CN 204200094 U CN204200094 U CN 204200094U
- Authority
- CN
- China
- Prior art keywords
- conduction pipe
- wall
- automatic scraper
- suspended automatic
- drill string
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of suspended automatic scraper, on its outer wall being arranged on drill string and on the horn mouth being positioned at conduction pipe, this suspended automatic scraper has the body that is made up of elastomeric material, middle part forms cavity, the internal diameter of this cavity is slightly less than the external diameter of drill string, and the external diameter of this body lower surface is less than described bell-mouthed maximum gauge and is greater than the internal diameter of conduction pipe.The inner peripheral surface of described cavity starts downwards gradually open form and becomes a conical surface from middle part, the lower end of this conical surface forms a face of cylinder to the bottom of body, and described body is removably fixed on described conduction pipe by a linkage.Drilling fluid automatic scraping on drill string can remove by this device, effectively prevents drilling fluid from being taken out of, reduces the labour intensity of workman and add drilling safety.
Description
Technical field
The utility model relates to oil or geological drilling field, particularly relates to a kind of suspended automatic scraper removing drill string outer wall adhesion mud for situ of drilling well.
Background technology
On-the-spot at the wellbore construction such as oil, natural gas, scientific investigation or geological drilling, in normal trip-out process, due to the viscosity of drilling fluid self, and be subject to the effect of inertia that drilling tool proposes in well, drilling fluid sticked on drilling tool and is carried out well head.If the drilling fluid be attached on drilling tool is not disposed, the waste of drilling fluid will be caused on the one hand, simultaneously because drilling fluid has alkaline speciality, certain corrosion is caused by the device such as drilling rod and bank head machinery, in addition drilling fluid drilling tool adhered to also can affect drilling tool upper/shackle operation, therefore the drilling fluid removed on drilling tool outer wall is extremely necessary.
Because the diameter of two ends of drill joint is larger than drilling rod body diameter, certain difficulty is brought to automatic sludge removing, to be driller mostly strike off mud on drilling tool with homemade mud rope of scraping to current situ of drilling well, not only increase the labour intensity of workman, and affecting operating personnel, to observe periphery operation dynamic, is unfavorable for avoiding the accidents such as falling object from high altitude.
Summary of the invention
For overcoming above-mentioned defect, the invention provides one and being suspended on conduction pipe horn mouth, the little and automatic mud scraper that safety is high of labour intensity.
The technical solution adopted for the present invention to solve the technical problems is as follows:
A kind of suspended automatic scraper, on its outer wall being arranged on drill string and on the horn mouth being positioned at conduction pipe, this suspended automatic scraper has the body that is made up of elastomeric material, middle part forms cavity, and this body can be made up of rubber, the contour elastic abrasion-proof material of resin.
Described body is removably fixed on described conduction pipe by a linkage.This body is preferably cylinder or cone, and the outer peripheral face place of body upper end preferably processes chamfering, can save material like this, save its weight.
The internal diameter of described cavity is slightly less than the external diameter of described drill string, and the external diameter of this body lower surface is less than described bell-mouthed maximum gauge and is greater than the internal diameter of described conduction pipe; The inner peripheral surface of described cavity starts downwards gradually open form and becomes a conical surface from middle part, the lower end of this conical surface forms a face of cylinder to the bottom of body, to facilitate drilling rod and joint thereof smoothly by scraper, and the mud struck off is flowed among pit shaft from tapered lower end.
Described linkage comprises the multiple locking rings be separately fixed on body outer wall and conduction pipe outer wall, and the locking ring on described body outer wall is connected by chain cable with the locking ring on corresponding conduction pipe outer wall.The length of chain cable slightly larger than the minimum range between the locking ring at its two ends, thus should ensure that scraper has certain scope of activities in operation process, can the swing of self adaptation drilling tool or phenomenon placed in the middle.Meanwhile, chain cable is used for preventing scraper to be suggested drilling floor surface in the lump along with drill string.
Scrape mud job stabilization for meeting and reduce installation workload, preferably, described locking ring on described body outer wall and conduction pipe outer wall uniform 3 ~ 4.
The beneficial effects of the utility model are: when adopting the scraper of said structure, drill string upwards proposes catheter procedure in well, scraper epimere inwall is attached on drill string outer wall all the time, drilling fluid automatic scraping on drill string can be removed, effectively prevent drilling fluid from being taken out of, reduce the labour intensity of workman and add drilling safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of the suspended automatic scraper of the utility model embodiment;
Fig. 2 is the installment state schematic diagram of Fig. 1 centre mounted type automatic mud scraper at well head.
Detailed description of the invention
Be described in detail below in conjunction with the structure of accompanying drawing to suspended automatic scraper of the present utility model.
Suspended automatic scraper as depicted in figs. 1 and 2, on its outer wall being arranged on drill string 1 and on the horn mouth 6 being positioned at conduction pipe 5, this suspended automatic scraper has the body 2 that is made up of elastomeric material, middle part forms cavity, the internal diameter of this cavity is slightly less than the external diameter of drill string 1, and the external diameter of this body 2 lower surface is less than the maximum gauge of described horn mouth 6 and is greater than the internal diameter of conduction pipe 5.The inner peripheral surface of described cavity starts downwards gradually open form and becomes a conical surface from middle part, the lower end of this conical surface forms a face of cylinder to the bottom of body.Described body 2 is removably fixed on described conduction pipe 5 by a linkage.
Body 2 is cylinder or cone preferably.Certainly, also can be other suitable shape, operate as long as be convenient to scrape mud.In practicality example described in the drawings, the outer peripheral face place of body 2 upper end forms chamfering, so both material saving, alleviates again the weight of this device self.
Described linkage comprises the multiple locking rings 3 be separately fixed on body 2 outer wall and conduction pipe 5 outer wall, and the locking ring on described body outer wall is connected by chain cable 4 with the locking ring on corresponding conduction pipe outer wall.The length of chain cable 4 should slightly larger than the minimum range between the locking ring 3 at its two ends, to ensure that scraper has certain scope of activities, the swing of self adaptation drilling tool or phenomenon placed in the middle in operation process, chain cable can also prevent scraper to be suggested drilling floor surface in the lump along with drill string.
Scrape mud job stabilization for meeting and reduce installation workload, locking ring 3 is uniform 3 ~ 4 of stupefied difference on body 2 outer wall and conduction pipe 5 outer wall.
The course of work of above-mentioned suspended automatic scraper is as follows:
When offshore boring island preparing pull out of hole, drilling rod 1 is fixed on rotating disk by slips, the body 2 of suspended automatic scraper is enclosed within drilling-rod external wall from drilling rod upper end, in initial trip-out process, the scraper of fastening chain cable 4 is depressed under drilling floor surface by rod tool by driller, until the lower end of chain cable 4 can be buckled on the locking ring 3 of conduction pipe 5.
With chain cable 4 by after relative with conduction pipe 5 for body 2 being connected and fixed, trip out drilling tool according to normal trip-out mode, now scraper inwall is close to drill string outer wall all the time; Drill string is carried in process, scraper and main drill string all have movement tendency upwards, but after chain cable 4 limits its maximum height, body 2 geo-stationary, make drill string 1 through while scraper, the drilling fluid sticking to drill string surface is eliminated and flows among conduction pipe.
When trip-out will complete, remove the connection between chain cable and conduction pipe by driller, make scraper entirety can propose drilling floor surface along with drill string one piece, then taken out.
Claims (6)
1. a suspended automatic scraper, on its outer wall being arranged on drill string (1) and on the horn mouth (6) being positioned at conduction pipe (5), it is characterized in that: this suspended automatic scraper has the body (2) that is made up of elastomeric material, middle part forms cavity, the internal diameter of this cavity is slightly less than the external diameter of described drill string (1), and the external diameter of this body (2) lower surface is less than the maximum gauge of described horn mouth (6) and is greater than the internal diameter of described conduction pipe (5); The inner peripheral surface of described cavity starts downwards gradually open form and becomes a conical surface from middle part, the lower end of this conical surface forms a face of cylinder to the bottom of body; Described body (2) is removably fixed on described conduction pipe (5) by a linkage.
2. suspended automatic scraper according to claim 1, is characterized in that: described body (2) is cylinder or cone.
3. suspended automatic scraper according to claim 1 and 2, is characterized in that: the outer peripheral face place of described body (2) upper end forms chamfering.
4. suspended automatic scraper according to claim 1 and 2, it is characterized in that: described linkage comprises the multiple locking rings (3) be separately fixed on body (2) outer wall and conduction pipe (5) outer wall, the locking ring on described body outer wall is connected by chain cable (4) with the locking ring on corresponding conduction pipe outer wall.
5. suspended automatic scraper according to claim 4, is characterized in that: the length of described chain cable (4) slightly larger than its two ends locking ring (3) between minimum range.
6. suspended automatic scraper according to claim 5, is characterized in that: described locking ring (3) is uniform 3 ~ 4 of difference on described body (2) outer wall and conduction pipe (5) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436637.0U CN204200094U (en) | 2014-08-04 | 2014-08-04 | Suspended automatic scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436637.0U CN204200094U (en) | 2014-08-04 | 2014-08-04 | Suspended automatic scraper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204200094U true CN204200094U (en) | 2015-03-11 |
Family
ID=52658063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420436637.0U Expired - Fee Related CN204200094U (en) | 2014-08-04 | 2014-08-04 | Suspended automatic scraper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204200094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762419A (en) * | 2017-11-06 | 2018-03-06 | 北京海格立斯智能装备技术有限公司 | Drilling rod clear buckle device automatically |
-
2014
- 2014-08-04 CN CN201420436637.0U patent/CN204200094U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762419A (en) * | 2017-11-06 | 2018-03-06 | 北京海格立斯智能装备技术有限公司 | Drilling rod clear buckle device automatically |
| CN107762419B (en) * | 2017-11-06 | 2024-05-31 | 北京海格立斯智能装备技术有限公司 | Automatic drill rod cleaning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20170804 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |